Greenheck’s new ceiling exhaust fan models SP-80 and SP-110 feature energy-efficient motor technology. This easy-to-install fan features an adjustable, low cubic-feet-per-minute setting to prevent ...

Greenheck has redesigned its premium model SP bathroom exhaust fans. The fans are available in six sizes, SP-A50 through SP-A190, and have sound ratings as low as 0.3 sones, company officials said.